Lake Seneca Dam
Ohio — Williams County — WEST BRANCH ST. JOSEPH RIVER
Location
| State | Ohio |
| County | Williams |
| River | WEST BRANCH ST. JOSEPH RIVER |
| Coordinates | 41.66444, -84.63611 |
Physical Characteristics
| NID Height | 36 ft |
| Dam Height | 36 ft |
| Dam Length | 990 ft |
| NID Storage | 8,117 acre-ft |
| Max Storage | 8,117 acre-ft |
| Surface Area | 233 acres |
Safety Classification
| Hazard Potential | High |
| Condition Assessment | Poor |
| EAP Status | No |
| Last Inspection | June 6, 2023 |
| Inspection Frequency | 5 |
Dam Information
| Year Completed | 1966 |
| Primary Purpose | Recreation |
| Dam Type | Earth |
| Owner Type | Private |
| Owner | Lake Seneca Property Owners Assn. |
Location Map
About This Dam Record
Dam safety data is maintained by the Army Corps of Engineers National Inventory of Dams (NID). High-hazard dams are those where failure could cause loss of life or major property damage downstream.